I have been on SSI for about 15 years now, and my father is retiring and I was disabled before 22 so I should qualify for the Disabled Adult Child under my father's account for SSDI. What I was wondering is if I get a lump sum of back pay, and where would the start of this back pay begin on my record--would it be when I became disabled when I was 21 or would it be later. I am now 35.
Do I subtract what I got for all this time with SSI from the lump sum of back pay that I would get from SSDI, calculating the amount of lump sum I will get from Social Security.
Any info or response I would appreciate. Thank you!